Usage:
Shriver Chert of Oriskany Group (MD*,PA*,WV*,NJ)
Shriver Chert (MD*,WV*)
Shriver Chert Member of Oriskany Formation (MD,PA)
Shriver Formation of Helderberg Group (WV)
Shriver Formation of Oriskany Group (PA*)
Shriver Member of Old Port Formation (PA*)
Geologic age:
early Early Devonian (Lochkovian)*
Type section, locality, area and/or origin of name:
Type area: Shriver Ridge at Cumberland, Allegany Co., MD (Swartz and others, 1913).
AAPG geologic province:
Appalachian basin*
For more information, please contact Nancy Stamm, Geologic Names Committee Secretary.
Asterisk (*) indicates published by U.S. Geological Survey authors.
"No current usage" (†) implies that a name has been abandoned or has fallen into disuse. Former usage and, if known, replacement name given in parentheses ( ).
Slash (/) indicates name conflicts with nomenclatural guidelines (CSN, 1933; ACSN, 1961, 1970; NACSN, 1983, 2005, 2021). May be explained within brackets ([ ]).